Deb: Fix brittle line numbers with simple paragraph detection

After this there will be no need to maintain line numbers, as the
extent of the sed deletion will automatically be until next empty line.

debian/autobake-deb.sh

@@ -16,11 +16,11 @@ export DEB_BUILD_OPTIONS="nocheck $DEB_BUILD_OPTIONS"
 if [[ $TRAVIS ]]
 then
   # On Travis-CI, the log must stay under 4MB so make the build less verbose
-  sed -i -e '/Add support for verbose builds/,+2d' debian/rules
+  sed -i -e '/Add support for verbose builds/,/^$/d' debian/rules
 
   # Don't include test suite package on Travis-CI to make the build time shorter
-  sed '/Package: mariadb-test-data/,+28d' -i debian/control
-  sed '/Package: mariadb-test$/,+38d' -i debian/control
+  sed '/Package: mariadb-test-data/,/^$/d' -i debian/control
+  sed '/Package: mariadb-test$/,/^$/d' -i debian/control
 
   # Don't build the test package at all to save time and disk space
   sed 's|DINSTALL_MYSQLTESTDIR=share/mysql/mysql-test|DINSTALL_MYSQLTESTDIR=false|' -i debian/rules
@@ -47,7 +47,7 @@ GCCVERSION=$(gcc -dumpfullversion -dumpversion | sed -e 's/\.\([0-9][0-9]\)/\1/g
 if ! apt-cache madison libcrack2-dev | grep 'libcrack2-dev *| *2\.9' >/dev/null 2>&1
 then
   sed '/libcrack2-dev/d' -i debian/control
-  sed '/Package: mariadb-plugin-cracklib/,+9d' -i debian/control
+  sed '/Package: mariadb-plugin-cracklib/,/^$/d' -i debian/control
 fi
 
 # If libpcre3-dev (>= 2:8.35-3.2~) is not available (before Debian Jessie or Ubuntu Wily)
@@ -94,7 +94,7 @@ fi
 # x86 32 bit.
 if [[ $GCCVERSION -lt 40800 ]] || [[ $(arch) =~ i[346]86 ]] || [[ $TRAVIS ]]
 then
-  sed '/Package: mariadb-plugin-rocksdb/,+15d' -i debian/control
+  sed '/Package: mariadb-plugin-rocksdb/,/^$/d' -i debian/control
 fi
 
 # AWS SDK requires c++11 -capable compiler.
@@ -127,12 +127,12 @@ fi
 # Mroonga, TokuDB never built on Travis CI anyway, see build flags above
 if [[ $TRAVIS ]]
 then
-  sed -i -e "/Package: mariadb-plugin-tokudb/,+19d" debian/control
-  sed -i -e "/Package: mariadb-plugin-mroonga/,+17d" debian/control
-  sed -i -e "/Package: mariadb-plugin-spider/,+18d" debian/control
-  sed -i -e "/Package: mariadb-plugin-oqgraph/,+16d" debian/control
+  sed -i -e "/Package: mariadb-plugin-tokudb/,/^$/d" debian/control
+  sed -i -e "/Package: mariadb-plugin-mroonga/,/^$/d" debian/control
+  sed -i -e "/Package: mariadb-plugin-spider/,/^$/d" debian/control
+  sed -i -e "/Package: mariadb-plugin-oqgraph/,/^$/d" debian/control
   sed -i -e "/usr\/lib\/mysql\/plugin\/ha_sphinx.so/d" debian/mariadb-server-10.4.install
-  sed -i -e "/Package: libmariadbd-dev/,+19d" debian/control
+  sed -i -e "/Package: libmariadbd-dev/,/^$/d" debian/control
 fi
 
 # Adjust changelog, add new version