Merge pull request #3 from NexeyaSGara/master

Libgsl fix for windows 7
fixed two init missing
Added SIP wrapping for Data::releaseBuffer
* Created new Release_Win7_Sync configuration for
  Processlib/LimaCore/PCO VS projects and solution.
* They define _WIN32_WINNT as 0x0600 (_WIN32_WINNT_LONGHORN)
  instead of 0x0502 (_WIN32_WINNT_WS03: WinXP SP2),
  which implies PTHREAD_WIN_XP_SYNC (XP API)
Add default install path for libgsl (based on patch from S. Gara)
Merge remote-tracking branch 'origin/master'

Conflicts:
	build/msvc/9.0/libprocesslib/libprocesslib.vcproj
manage in Mask task INT32 images
Windows x64 compilation
For now without gsl and Bpm
Fixed a potential bug with init min/max of roi counters
Add lut type to Roi counters
Add mask on Roicounter with helper for arcs

Compilation fixes for windows
* Added independent (and readable) ARC RoI type to RoiCounterTask
* Switched to v1.3.0
* Allow disabling the synchronisation with threads on quit,
  necessary if process is forked (no threads on child process)
* Fix typo and include (forgotten) processlib_before_4_12.sip
Check roi counters/spectrum boundaries with data size
Adding PeakFinder task
Fixed a compilation warning (seb)
Merge pull request #5 from teresa
Adding peak finder algorithms
Use enum for selecting peak finding algorithm