Add lowercase letters to patch match

Author: dcwhite

src/CMakeLists.txt

@@ -97,7 +97,7 @@ MESSAGE(STATUS "Git version commit hash: " "${VERSION_HASHVAR}")
 string(REGEX REPLACE "^v([0-9]+)\\..*" "\\1" VERSION_MAJOR "${VERSION_TAG}")
 string(REGEX REPLACE "^v[0-9]+\\.([0-9]+).*" "\\1" VERSION_MINOR "${VERSION_TAG}")
 #TODO: make generic 
-string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\-(alpha.[A-Z]+)\\-.*" "\\1" VERSION_PATCH "${VERSION_TAG}")
+string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\-(alpha.[A-Za-z]+)\\-.*" "\\1" VERSION_PATCH "${VERSION_TAG}")
 #TODO: parse SHA 
 #string(REGEX REPLACE "^v[0-9]+\\.[0-9]+\\.[0-9]+(.*)" "\\1" VERSION_SHA1 "${VERSION}")
 #set(VERSION_SHORT "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")