xmake v2.0.4 released!

New features

• Add native shell support for xmake.lua. .e.g add_ldflags("$(shell pkg-config --libs sqlite3)")
• Enable pdb symbol files for windows
• Add debugger support on windows (vsjitdebugger, ollydbg, windbg … )
• Add getenv interface for the global scope of xmake.lua
• Add plugin for generating vstudio project file (vs2002 - vs2015)
• Add set_default api for option

Changes

• Improve builtin-variable format
• Support option for string type

Bugs fixed

• Fix check ld failed without g++ on linux
• Fix compile *.cxx files failed