Log Message:
Update ipa to 2.0.4.
Patch provided by maintainer, Andrey Simonenko in PR 36692.

Changes:
 *	Now IPA can be used on Cygwin (previously it only could be built).

 *	If SYM_PREFIX is defined, then ipa and ipastat try to lookup
	symbols in modules with SYM_PREFIX, if this attempt failed,
	then they try to lookup symbols without prefix.

 *	Use closefrom() system call if the system supports it.

 *	During startup ipa could unlink locked PID-file, that was
	locked by another ipa process.

 *	WCOREDUMP macro is not mentioned in SUSv3 (#ifdef it).