Fix long-standing bug with multiple pragmas.

There is a subtle bug here in that the rs_fp_imprecise setting will always be
clobbered with rs_fp_full due to the "fast return" path. This change also
replaces ::strcmp() with the original implementation's std::string::compare().

Change-Id: I5b309583fed84d09ded091e25f1971fa9e1ec430
1 file changed