Merge branch 'improve-get-git' into 'master'

improving get_git_revision preformance

See merge request !15

grisred/get_git_revision.pro

 function get_git_revision
-  ;get path to this file
-  source_path = file_dirname(file_search(strsplit(!path,':',/extract),'get_git_revision.pro'))
+  ;get path to this file, iterate through all folders on path, 
+  ;skip working directory as it could be very large
+  foreach folder, strsplit(!path,':',/extract) do begin
+    if folder eq '.' then continue
+     cnt=0
+     paths = file_search(folder,'get_git_revision.pro',count=cnt,/fully_qualify_path)
+     if (cnt gt 0) then begin
+        source_path = FILE_DIRNAME(paths)
+        break
+     endif
+  endforeach
   
   spawn,'cd '+source_path+ $
     ' ; ./git-create-revisioninfo-hook.sh',gitinfo