Add support for yasm, a nasm compatible assembler

Alex

Modules/CMakeASM_NASMInformation.cmake

@@ -14,7 +14,7 @@
 
 # support for the nasm assembler
 
-set(CMAKE_ASM_NASM_SOURCE_FILE_EXTENSIONS nasm)
+set(CMAKE_ASM_NASM_SOURCE_FILE_EXTENSIONS nasm asm)
 
 if(WIN32)
   if(CMAKE_C_SIZEOF_DATA_PTR EQUAL 8)

Modules/CMakeDetermineASM_NASMCompiler.cmake

@@ -12,9 +12,9 @@
 # (To distribute this file outside of CMake, substitute the full
 #  License text for the above reference.)
 
-# Find the nasm assembler
+# Find the nasm assembler. yasm (http://www.tortall.net/projects/yasm/) is nasm compatible
 
-SET(CMAKE_ASM_NASM_COMPILER_INIT nasm)
+SET(CMAKE_ASM_NASM_COMPILER_INIT nasm yasm)
 
 IF(NOT CMAKE_ASM_NASM_COMPILER)
   FIND_PROGRAM(CMAKE_ASM_NASM_COMPILER nasm