Fixed issue with bigincrements not working with composite key in MySQL - #5341

[davidf84]

Fixes issue with bigincrements not working when having a composite keys since the alter table is not present for bigincrements as descriped in #5341 .

Also fixes issue when using bigincrements and the field was not added as a primary key. The below currently fails since logic to handle bigincrements in the primary key function is missing.

knex.schema.createTable("test_table", table => {
        table.primary(['name']);
        table.bigincrements('userId');
        table.string('name');
}

[coveralls]

Coverage decreased (-0.009%) to 92.325% when pulling f4a145d on davidf84:master into d39051f on knex:master.

[rluvaton]

LGTM

[rluvaton]

@kibertoad it's looking good

[kibertoad]

thanks!