Add gumpp-static project
Add gumpp-common.props
Move gumpp-static project files in the gumpp dir
Remove prefixes from gumpp-common.props
Remove the wrong GUMPP_EXPORTS  macro from gumpp-static project
Add GUMPP_STATIC on all configurations for gumpp-static project
Remove redundant prefixes from gumpp.vcxproj.filters file
Merge pull request #2 from imcu/master

Add gumpp-static project