bug#19376: [PATCH 4/4] build: use -pi.bak instead of -pi

[KO Myung-Hun]

This fixes the following error.

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Can't do inplace edit without backup.
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* Makefile.am (dist-hook): Use -pi.bak instead of -pi.
* bootstrap.conf (bootstrap_epilogue): Likewise.
---
 Makefile.am    | 2 +-
 bootstrap.conf | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index fb4af27..371eb59 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -105,7 +105,7 @@ BUILT_SOURCES = .version
 # See the rm_subst comment for details.
 dist-hook: gen-ChangeLog
        $(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version
-       $(AM_V_at)perl -pi -e '$(rm_subst)' $(distdir)/Makefile.in
+       $(AM_V_at)perl -pi.bak -e '$(rm_subst)' $(distdir)/Makefile.in
 
 gen_start_date = 2008-02-08
 .PHONY: gen-ChangeLog
diff --git a/bootstrap.conf b/bootstrap.conf
index c0b5f02..0baf455 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -366,7 +366,7 @@ bootstrap_epilogue()
   # Why?  That pipeline searches all files in $(top_srcdir), and if you
   # happen to have large files (or apparently large sparse files), the
   # first grep may well run out of memory.
-  perl -pi -e 's/if LC_ALL=C grep .GNU .PACKAGE.*; then/if true; then/' \
+  perl -pi.bak -e 's/if LC_ALL=C grep .GNU .PACKAGE.*; then/if true; then/' \
     po/Makefile.in.in
 
   # Install our git hooks, as long as "cp" accepts the --backup option,
-- 
1.8.5.2