pigz: Fix annocheck errors

Add compile and linker flags to fix annocheck errors.

Additional fix: Block patch files in .gitignore

Resolves: rhbz#1956998

Signed-off-by: Prarit Bhargava <prarit@redhat.com>

.gitignore

@@ -1 +1,2 @@
 /*.tar.*
+0*.patch

pigz.spec

@@ -1,6 +1,6 @@
 Name:           pigz
 Version:        2.5
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Parallel implementation of gzip
 License:        zlib
 URL:            https://www.zlib.net/pigz/
@@ -26,7 +26,7 @@ compressing data.
 %autosetup -p1
 
 %build
-%make_build CFLAGS="$RPM_OPT_FLAGS"
+%make_build CFLAGS="$RPM_OPT_FLAGS" LDFLAGS="$RPM_LD_FLAGS"
 
 %install
 install -p -D pigz $RPM_BUILD_ROOT%{_bindir}/pigz
@@ -43,6 +43,9 @@ make tests CFLAGS="$RPM_OPT_FLAGS"
 %{_datadir}/man/man1/pigz.*
 
 %changelog
+* Wed Oct 06 2021 Prarit Bhargava <prarit@redhat.com> - 2.5-4
+- Fix annocheck erros [1956998]
+
 * Mon Aug 09 2021 Mohan Boddu <mboddu@redhat.com> - 2.5-3
 - Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
   Related: rhbz#1991688