allow database alters and case insensitive check for info schema

[jycor]

fixes: #7814

[coffeegoddd]

@coffeegoddd DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
7b1e1c9	ok	5937457

version	total_tests
7b1e1c9	5937457

correctness_percentage
100.0

[coffeegoddd]

@jycor DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
dc4f3b8	ok	5937457

version	total_tests
dc4f3b8	5937457

correctness_percentage
100.0

[coffeegoddd]

@jycor DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
8c69540	ok	5937457

version	total_tests
8c69540	5937457

correctness_percentage
100.0

[macneale4]

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