* include/tr1/cmath: Add atan2 and pow bits; add using declarations.	
	* include/tr1/math.h: Add using declarations.
	* include/tr1/complex: Add using declarations.
	* testsuite/tr1/8_c_compatibility/cmath/functions.cc: Fully
	qualify calls.
	* testsuite/tr1/8_c_compatibility/cmath/overloads.cc: Likewise;
	add atan2 and pow bits.
	* testsuite/tr1/8_c_compatibility/complex/overloads_float.cc: Likewise.
	* testsuite/tr1/8_c_compatibility/complex/overloads_int.cc: Likewise;
	adjust polar bits.

	* acinclude.m4 ([GLIBCXX_CHECK_C99_TR1]): Add checks for double_t
	and float_t typedefs.
	* include/tr1/cmath: Add double_t and float_t.
	* testsuite/tr1/8_c_compatibility/cmath/types.cc: New.

	* include/tr1/ctgmath: New.
	* include/tr1/tgmath.h: Likewise.
	* include/Makefile.am: Add.
	* testsuite/tr1/headers.cc: Update.

	* include/Makefile.in: Regenerate.
	* configure: Likewise.

	* docs/html/ext/tr1.html: Update.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111931 138bc75d-0d04-0410-961f-82ee72b054a4