[PATCH 0/1] MR7863: win87em: Fix __FPMATH symbol name

[Pali Rohár (＠pali)]

Windows 3.0, Windows 3.1 and Windows 95 have library WIN87EM.DLL with
symbol name __FPMATH, not with _FPMATH. So fix the __FPMATH symbol name.

This change fixes running Windows 3.0 CALC.EXE application, which imports
WIN87EM.DLL symbols by name. Without this change the CALC.EXE fails on:
"No implementation for WIN87EM.__FPMATH, setting to 0xdeadbeef"

Other Windows application, including Windows 3.1+ CALC.EXE application,
import WIN87EM.DLL symbols by ordinals, so are not affected by this issue.