travis: use the latest MariaDB 10.0
Fix a bug that 1969-12-31 23:59:59 UTC (Unix time: -1) causes an error

Redmine: fixes #2553
Apply a patch that fixes a test for MariaDB 10.0.11

Redmine: fixes #2552
Redmine: ref #2385

MariaDB 10.0.11 shows an int system variable mroonga_lock_timeout as
a signed integer. Note that MySQL and MariaDB 10.0.x (x < 11) show it
as an unsigned integer, for example,
  SHOW GLOBAL VARIABLES LIKE "mroonga_lock_timeout";
shows 4294967295 if mroonga_lock_timeout = -1.

The patch is written by Toshihisa Tashiro. Thanks!!!
travis: follow MariaDB source download URL

Redmine: fixes #2557

Reported by Hiroshi Hatake. Thanks!!!
travis: tests for MariaDB 5.5.37 should pass
Remove parentheses in if() to support cmake 2.6

cmake 2.6 reported a parsing error as follows:
  Parse error.
  Function missing ending ")".
  Instead found left paren with text "(".

Reported by Kentoku Shiba. Thanks!!!
Install install.sql and uninstall.sql
Automake task to upload source packages to Launchpad
package ubuntu: add upload script for Launchpad
doc en: update Developer's guide about Adding and updating document
package ubuntu: copy rules file for Launchpad PPA
packages: add missing ubuntu directory
Add missing dist_ prefix install SQLs
packages ubuntu: remove needless exit
Use the latest MariaDB

    10.0.10 ->
    10.0.11
          ^
packages ubuntu: remove needless exit
Add global variable recovering for loading type Mroonga test.
Add loading Mroonga at starting MariaDB.
packages debian: add missing dependency to wget

It's used for Launchpad PPA
packages debian: add rules for Launchpad PPA