libwinpr-utils: further split wlog framework into more source files, add some thread safety for write operations
libwinpr-utils: add wlog support for image and binary data
added c++ declaration in wlog
Merge pull request #5 from MartinHaimberger/wlogfix

Wlogfix
Merge branch 'master' of git://github.com/awakecoding/FreeRDP

# By Marc-André Moreau (2) and Martin Haimberger (1)
# Via Marc-André Moreau (1) and Martin Haimberger (1)
* 'master' of git://github.com/awakecoding/FreeRDP:
  added c++ declaration in wlog
  libwinpr-utils: add wlog support for image and binary data
  libwinpr-utils: further split wlog framework into more source files, add some thread safety for write operations