5262 libm needs to be carefully unifdef'd
5268 libm doesn't need to hide symbols which are already local
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Gordon Ross <gwr@nexenta.com>

*** 509,520 ****
  LINTERROFF      += -erroff=E_NAME_MULTIPLY_DEF2
  LINTFLAGS       += $(LINTERROFF)
  LINTFLAGS64     += $(LINTERROFF)
  LINTFLAGS64     += -errchk=longptr64
  
- CPPFLAGS        += -DLIBM_BUILD
- 
  CFLAGS          += $(C_BIGPICFLAGS)
  CFLAGS64        += $(C_BIGPICFLAGS)
  
  m9x_IL          = $(LIBMDIR)/common/m9x/__fenv_$(TARGET_ARCH).il
  
--- 509,518 ----