tidy-up: .gitignore lines mostly

- `.gitignore`: delete, dedupe and move rules upwards.
  Ref: 6389ba87b8 #13311
- `.gitignore`: fix generated test sources.
  Follow-up to 71cf0d1fca #14772
- `.gitignore`: replace exe listings with a wildcard.
- lib: move `setup-*.h` from `EXTRA_DIST` to `CURL_HFILES`.
- `makedebug.bat`: uppercase an argument to match docs.
- GHA/non-native: delete stray env.
  Follow-up to 12a6de2f66 #16043
- sort source lists.

Closes #16093

lib/.gitattributes

@@ -1,3 +0,0 @@
-# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
-#
-# SPDX-License-Identifier: curl

lib/.gitignore

@@ -2,12 +2,6 @@
 #
 # SPDX-License-Identifier: curl
 
-*.a
-*.orig
-*.rej
-*.res
-TAGS
 curl_config.h
 curl_config.h.in
 libcurl.vers
-stamp-h1

lib/Makefile.am

@@ -28,11 +28,9 @@ CMAKE_DIST = CMakeLists.txt curl_config.h.cmake
 CHECKSRC_DIST = .checksrc vauth/.checksrc vquic/.checksrc vssh/.checksrc \
  vtls/.checksrc
 
-EXTRA_DIST = config-win32.h config-plan9.h                              \
- config-riscos.h config-mac.h curl_config.h.in libcurl.rc               \
- config-os400.h setup-os400.h                                           \
- $(CMAKE_DIST) setup-win32.h Makefile.soname optiontable.pl libcurl.def \
- $(CHECKSRC_DIST)
+EXTRA_DIST = config-mac.h config-os400.h config-plan9.h config-riscos.h \
+ config-win32.h curl_config.h.in libcurl.rc libcurl.def                 \
+ $(CMAKE_DIST) Makefile.soname optiontable.pl $(CHECKSRC_DIST)
 
 lib_LTLIBRARIES = libcurl.la
 

lib/Makefile.inc

@@ -349,7 +349,9 @@ LIB_HFILES =         \
   select.h           \
   sendf.h            \
   setopt.h           \
+  setup-os400.h      \
   setup-vms.h        \
+  setup-win32.h      \
   share.h            \
   sigpipe.h          \
   slist.h            \