SF bug #474077 2.2b1: Error compiling extns with BCC

Removed "#undef HAVE_HYPOT" line from Borland config, as suggested.
Whether this will break some other Borland usage is a good question I
can't answer.

Misc/ACKS

@@ -23,6 +23,7 @@ Donovan Baarda
 Alfonso Baciero
 Stig Bakken
 Greg Ball
+Luigi Ballabio
 Cesar Eduardo Barros
 Des Barry
 Ulf Bartelt

PC/pyconfig.h

@@ -180,7 +180,6 @@ typedef int pid_t;
 #define HAVE_LONG_LONG 1
 #define LONG_LONG __int64
 
-#undef HAVE_HYPOT
 #undef HAVE_SYS_UTIME_H
 #define HAVE_UTIME_H
 #define HAVE_DIRENT_H