compile_wrapper now can be called from anywhere and can accept a path to strawberry perl, perl version, and c++ compiler.
package_win32.ps1 can now be run from anywhere (puts its output in Slic3r root dir still), automatically detects 64bit/32bit and has more overrides. It will also call compiler_wrapper if the wrapper execs do not exist.
* Slightly modified perl wrapper from @bubnikv and added a short powershell script to build it (assuming Strawberry Perl is installed)
* added shell and tweaked build script to package 5.18 or 5.24
* moved class::accessor to local-lib
* Using different thread library for packager (x64), wrapper is verbose.
* Statically link libgcc for shell program, include pthreadGC2-w64.dll
* set default perl version, added more linker options
Added libgcc_s_sjlj-1.dll to pack list.
* Removed Sub::Util from manual dependency list.
* Added resource file for wrapper exe and appended compile steps..
* added Win32 perl module
* Add libglut-0.dll
