cmake: lib order fixes for picky linkers (e.g. binutils ld)

This issue was not addressed with CMake builds so far. curl-for-win
worked thanks to its `-Wl,--start-group` workaround. It affects
binutils `ld` linking statically. Shared linking and llvm's `lld`
doesn't need strict lib order, and are not affected.

The solution is to pass libs in dependency order, with least dependent
(e.g. system) libs last. In case of cyclic dependency, may pass libs
twice.

Fix most issues by moving Windows system libs `ws2_32` and `bcrypt`
last, and move SSH libs first due to their dependence on crypto
backends and zlib compression.

Also:
- modify an existing Linux curl-for-win job to use gcc.
- add a specific Windows gcc job to test this. Make it use different
  options than the default to extend build coverage too: `libssh`,
  `zlib-ng`, 32-bit.
- prefer CMake imported targets for OpenSSL and ZLIB.

Examples of issues fixed:

Windows LibreSSL, libpsl vs. ws2_32:
```
x86_64-w64-mingw32-ld: curl/libressl/lib/libcrypto.a(bss_sock.c.obj):bss_sock.c:(.text$sock_ctrl[sock_ctrl]+0x59): undefined reference to `__imp_shutdown'
x86_64-w64-mingw32-ld: curl/libressl/lib/libcrypto.a(gcm128.c.obj):gcm128.c:(.text$CRYPTO_gcm128_init[CRYPTO_gcm128_init]+0x65): undefined reference to `__imp_ntohl'
x86_64-w64-mingw32-ld: curl/libpsl/_x64-win-ucrt/usr/lib/libpsl.a(psl.o):(.text$psl_is_cookie_domain_acceptable+0xef): undefined reference to `__imp_WSAStringToAddressW'
```
Ref: https://github.com/curl/curl/actions/runs/13157579253/job/36718144881?pr=16182#step:3:5354

Linux libssh2 vs. zlib:
```
/usr/lib/gcc-cross/aarch64-linux-gnu/12/../../../../aarch64-linux-gnu/bin/ld: curl/libssh2/_a64-linux-gnu-libressl/usr/lib/libssh2.a(unity_0_c.c.o): in function `comp_method_zlib_dtor':
(.text.comp_method_zlib_dtor+0x8c): undefined reference to `deflateEnd'
/usr/lib/gcc-cross/aarch64-linux-gnu/12/../../../../aarch64-linux-gnu/bin/ld: curl/libssh2/_a64-linux-gnu-libressl/usr/lib/libssh2.a(unity_0_c.c.o): in function `comp_method_zlib_comp':
(.text.comp_method_zlib_comp+0x50): undefined reference to `deflate'
/usr/lib/gcc-cross/aarch64-linux-gnu/12/../../../../aarch64-linux-gnu/bin/ld: curl/libssh2/_a64-linux-gnu-libressl/usr/lib/libssh2.a(unity_0_c.c.o): in function `comp_method_zlib_init':
(.text.comp_method_zlib_init+0x8c): undefined reference to `deflateInit_'
```
Ref: https://github.com/curl/curl/actions/runs/13157270420/job/36717189086?pr=16182#step:3:5285

Windows libssh vs. ws2_32 and LibreSSL:
```
/usr/bin/i686-w64-mingw32-ld: curl/libssh/_x86-win-ucrt-libressl/usr/lib/libssh.a(connect.c.obj):(.text$ssh_connect_host_nonblocking+0x92): undefined reference to `WspiapiGetAddrInfo@16'
/usr/bin/i686-w64-mingw32-ld: curl/libssh/_x86-win-ucrt-libressl/usr/lib/libssh.a(connect.c.obj):(.text$ssh_connect_host_nonblocking+0x3d9): undefined reference to `gai_strerrorA'
/usr/bin/i686-w64-mingw32-ld: curl/libssh/_x86-win-ucrt-libressl/usr/lib/libssh.a(kex.c.obj):(.text$ssh_client_select_hostkeys+0xd2): undefined reference to `FIPS_mode'
/usr/bin/i686-w64-mingw32-ld: curl/libssh/_x86-win-ucrt-libressl/usr/lib/libssh.a(options.c.obj):(.text$ssh_options_set+0x942): undefined reference to `FIPS_mode'
```
Ref: https://github.com/curl/curl/actions/runs/13163986294/job/36739557888?pr=16182#step:3:5127
Ref: https://github.com/curl/curl/actions/runs/13163986294/job/36739557888?pr=16182#step:3:5121

Closes #16182

.github/workflows/curl-for-win.yml

@@ -42,7 +42,7 @@ env:
   CW_NOPKG: '1'
 
 jobs:
-  linux-glibc-llvm:
+  linux-glibc-gcc:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
@@ -55,7 +55,7 @@ jobs:
         run: |
           git clone --depth 1 https://github.com/curl/curl-for-win
           mv curl-for-win/* .
-          export CW_CONFIG='-main-werror-linux-a64-x64'
+          export CW_CONFIG='-main-werror-linux-a64-x64-gcc-nolibgroup'
           export CW_REVISION='${{ github.sha }}'
           DOCKER_IMAGE='debian:bookworm-slim'
           export DOCKER_CONTENT_TRUST=1
@@ -137,3 +137,27 @@ jobs:
               '^(CW_|GITHUB_)') \
             "${DOCKER_IMAGE}" \
             sh -c ./_ci-linux-debian.sh
+
+  win-gcc-libssh-zlibng-x86:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+        with:
+          persist-credentials: false
+          path: 'curl'
+          fetch-depth: 8
+      - name: 'build'
+        run: |
+          git clone --depth 1 https://github.com/curl/curl-for-win
+          mv curl-for-win/* .
+          export CW_CONFIG='-main-werror-win-x86-gcc-nolibgroup-libssh1-zlibng'
+          export CW_REVISION='${{ github.sha }}'
+          . ./_versions.sh
+          docker trust inspect --pretty "${DOCKER_IMAGE}"
+          time docker pull "${DOCKER_IMAGE}"
+          docker images --digests
+          time docker run --volume "$(pwd):$(pwd)" --workdir "$(pwd)" \
+            --env-file <(env | grep -a -E \
+              '^(CW_|GITHUB_)') \
+            "${DOCKER_IMAGE}" \
+            sh -c ./_ci-linux-debian.sh