Undid amendment allowing pending reap after switching connections
Moved check for pending reap earlier; failed if running with ps-protocol

Small amendment: ignore pending reap when switching connection, add test

Added them
NB the 6th case is adapted to Bug no. 49269, gives wrong output without it

Set a flag after send to trap the case

Implemented --lowercase_result which lower cases next result

Was available in v1
Porting to v2 required some rewriting
Updated after review comments

Combinations beginning with -- not allowed
Allow them...

Combinations beginning with -- not allowed
Allow them...

 
- backported code that handles %f/%g arguments in 
my_vsnprintf.c from 6.0 
- backported %f/%g tests in unittest/mysys/my_vsnprintf-t.c 
from 6.0 
- replaced snprintf("%g") in sql/set_var.cc with my_gcvt() 
- removed unnecessary "--replace-result"s for Windows in 
mysql-test/suite/sys_vars/t/long_query_time_basic.test 
- some test results adjustments

Unlike other platforms --mfpmath=sse is the default 
gcc mode on Mac OS X Intel. So it is unnecessary
to switch FPU to double precision mode (in fact,
it even breaks some math library functions).

Conflicts:
  - storage/myisam/mi_static.c