[LyX/master] Cmake build. Use 2.0.0 git-tag to receive the number of commits.

[Kornel Benko]

commit 7033b157936370ec3de2d20f01d70e8512990b51
Author: Kornel Benko <kor...@lyx.org>
Date:   Sat Nov 30 19:53:30 2013 +0100

    Cmake build. Use 2.0.0 git-tag to receive the number of commits.
    
    This number is only used for created package name.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c0fd673..e72aad5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -279,7 +279,8 @@ if (LYX_LOCALVERSIONING)
        FIND_PROGRAM(LYX_GITVERSION git)
        #message(STATUS "gitversion = ${LYX_GITVERSION}")
        if(LYX_GITVERSION)
-               EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} "describe" 
WORKING_DIRECTORY "${TOP_SRC_DIR}" OUTPUT_VARIABLE LYX_PACKAGE_RELEASE 
OUTPUT_STRIP_TRAILING_WHITESPACE)
+               EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} describe --match 
2.0.0 HEAD
+                WORKING_DIRECTORY "${TOP_SRC_DIR}" OUTPUT_VARIABLE 
LYX_PACKAGE_RELEASE OUTPUT_STRIP_TRAILING_WHITESPACE)
                if (LYX_PACKAGE_RELEASE MATCHES "^2\\.0\\.0\\-\([0-9]+\)\\-.*$")
                  # We will add offset of 40000 to get appropriate value to
                  # previous svn.