Replaced VARCHAR with TEXT in databases.

Replaced VARCHAR with TEXT in databases.

[Issue#] LINUXWRT-71

[Problem] CREATE TABLE statement could be misleading - string fields are
falsely limited.

[Cause] SQLite ignore numeric arguments in parentheses of data types
(ex. VARCHAR(256), VARCHAR(8) is TEXT).

[Solution] If length of string fields are not specified, replace VARCHAR(x) to TEXT.

[Verification] Build wrt-commons, other rpms depending on
wrt-common, run tests and compare results before and after this patch.

Change-Id: I1abbea070fef250b456ac45b299cba3f2691464b