[LyX/master] Cmake build: Allow numbers in lyx-suffix too

[Kornel Benko]

commit 0f798d6675857711f70aa527e59d9fb6d0d78e5f
Author: Kornel Benko <kor...@lyx.org>
Date:   Sun Apr 30 16:58:41 2017 +0200

    Cmake build: Allow numbers in lyx-suffix too
    
    That way we can use '-DLYX_SUFFIX_VALUE=123.456'
---
 development/cmake/modules/LyXMacros.cmake |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/development/cmake/modules/LyXMacros.cmake 
b/development/cmake/modules/LyXMacros.cmake
index cdcbae8..ff0822e 100644
--- a/development/cmake/modules/LyXMacros.cmake
+++ b/development/cmake/modules/LyXMacros.cmake
@@ -266,7 +266,7 @@ macro(LYX_STRING _name _description _default)
     if (NOT "${tmp_lyx_name}" MATCHES "^\\..*$")
       set(tmp_lyx_name ".${tmp_lyx_name}")
     endif()
-    if (NOT "${tmp_lyx_name}" MATCHES "^\\.[a-zA-Z_\\.]+$")
+    if (NOT "${tmp_lyx_name}" MATCHES "^\\.[a-zA-Z_0-9\\.]+$")
       message(FATAL_ERROR "Invalid string for lyx suffix (${tmp_lyx_name})")
     endif()
   endif()