Eliminate %%glibcrelease macro

As a result, future mass rebuilds will increment the Release: field as
expected.

glibc.spec

@@ -1,6 +1,5 @@
 %define glibcsrcdir glibc-2.29-1-g86013ef5ce
 %define glibcversion 2.29
-%define glibcrelease 1%{?dist}
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
 #
@@ -88,7 +87,7 @@
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: %{glibcrelease}.1
+Release: 2%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -1890,6 +1889,10 @@ fi
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Fri Feb  1 2019 Florian Weimer <fweimer@redhat.com> - 2.29-2
+- Eliminate %%glibcrelease macro.
+- Switch to regular Release: pattern.
+
 * Thu Jan 31 2019 Carlos O'Donell <carlos@redhat.com> - 2.29-1
 - Auto-sync with upstream branch release/2.29/master,
   commit 86013ef5cea322b8f4b9c22f230c22cce369e947.