Fix pkgconfig file #336

Job	Run time
Ubuntu 20 GCC	1m 5s
Ubuntu GCC ASAN	3m 33s
Ubuntu GCC UBSAN	3m 16s
Ubuntu GCC MSAN	1m 5s
Ubuntu 20 Clang	56s
Ubuntu 20 Clang 6.0	1m 16s
Ubuntu GCC	1m 21s
Ubuntu GCC OSB	1m 47s
Ubuntu Clang	1m 23s
Ubuntu Clang No Zlib	1m 15s
Ubuntu Clang No Bzip2	1m 1s
Ubuntu Clang No LZMA	1m 3s
Ubuntu Clang No Zstd	1m 34s
Ubuntu Clang No Pkcrypt	1m 25s
Ubuntu Clang No Winzip AES	1m 11s
Ubuntu Clang No Encryption	46s
Ubuntu Clang Compress Only	1m 4s
Ubuntu Clang Decompress Only	1m 4s
Ubuntu Clang OpenSSL	1m 39s
Windows MSVC	3m 49s
Windows GCC Code Coverage	8m 5s
macOS Xcode	2m 23s
macOS Xcode Code Coverage	1m 55s
macOS Xcode LibCompression	2m 16s
macOS Xcode OpenSSL	2m 18s
	48m 30s

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