Backport into mysql-5.1.49sp1-release

> ------------------------------------------------------------
> revno: 3457.3.1
> revision-id: alexey.kopytov@sun.com-20100712145855-niybvwsthe480r69
> parent: mattias.jonsson@oracle.com-20100709130033-fgr7hggrrebf6qkc
> committer: Alexey Kopytov <Alexey.Kopytov@sun.com>
> branch nick: 55061-5.1-bugteam
> timestamp: Mon 2010-07-12 18:58:55 +0400
> message:
>   Bug#55061: Build failing on sol 8 x86 - assembler code vs 
>              compiler problem
>   
>   GCC-style inline assembly is not supported by the Sun Studio
>   compilers prior to version 12.
>   
>   Added a check for the Sun Studio version to avoid using 
>   _FPU_GETCW() / _FPU_SETCW() when inline assembly is
>    unsupported. This can lead to some differences in floating
>   point calculations on Solaris 8/x86 which, however, is not worth
>   bothering with Sun-style assembly .il templates.

sql/mysqld.cc

@@ -190,7 +190,7 @@ typedef fp_except fp_except_t;
 # define fpu_control_t unsigned int
 # define _FPU_EXTENDED 0x300
 # define _FPU_DOUBLE 0x200
-# if defined(__GNUC__) || defined(__SUNPRO_CC)
+# if defined(__GNUC__) || (defined(__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
 #  define _FPU_GETCW(cw) asm volatile ("fnstcw %0" : "=m" (*&cw))
 #  define _FPU_SETCW(cw) asm volatile ("fldcw %0" : : "m" (*&cw))
 # else