Update build-aux submodule reference for SF host migration.
Install non-executable files with proper attributes.
Avoid a potential SIGSEGV crash on CRT start-up.
	* Makefile.in: Add installation and delivery of library object files.
	* .gitignore: Add nbproject folder.
Merge branch '4.0-dev' of ssh://git.code.sf.net/p/mingw/mingw-org-wsl into 4.0-dev

Conflicts:
	ChangeLog
Correction for issues #1956 and #1958.
Add clean-dist, clean-dist-mingwrt, clean-dist-w32api and clean-dist-wsl targets.
Rework _USE_32BIT_TIME_T in light of MSVCRT_VERSION value.
Correct use of MSVCRT_VERSION.
Correct mistyped __MINGW_NOTHROW macro.
Modifications for _USE_32BIT_TIME_T issue.
Header file dependencies required inclusions to be above the file guard.
Add lib/libshell32/shell32.o to the libshell32.a library.
Correct typo for UNICODE define of SHGetFolderPath.
Provide more robust inverse hyperbolic sine functions.
include/time.h: Correct typos. Add MSVCRT_VERSION >= 800 guard for _CRTALIAS of _wctime.
Miscellaneous changes toward finalizing the _USE_32BIT_TIME_T debacle.
Merge changes from repository.
Correct malformations and missed definitions to finish _USE_32BIT_TIME_T coding.