rpm: add a missing "."
rpm centos mariadb: build against mariadb-5.5.37-1.el7_0
rpm centos mariadb: revert unexpected removed variable
rpm centos mariadb: remove downloaded MariaDB SRPM
rpm centos mariadb: support epoch
rpm centos mariadb: rebuild with epoch support
rpm centos mariadb: build MariaDB for libmysqlservices.a
yum: don't use --with-libmysqlservices-compat for mariadb-mroonga
yum: use more CPUs

Because we may need to build MariaDB. It is a large software.
doc install: remove needless explicit groonga-normalizer-mysql install

groonga-normalizer-mysql is installed automatically as a depended
package.
Update spec list in update-latest-release target
doc: generate .edit by just `make`
doc: add missing dependency

We need .pot to generate .mo.
doc: remove needless target
doc: use "$<"

Because it is macro for the propose.
doc: split upgrade document from install document
Use "Mroonga" form
doc: split install document
Fix a typo...
doc: fix a typo

   tokeniser ->
   tokenizer
         ^