Change debug flags -O0 -ggdb3 (#79) #334

Job	Run time
Recompiling ido 5.3 for linux	2m 6s
Recompiling ido 7.1 for linux	1m 29s
Recompiling ido 5.3 for macos	2m 38s
Recompiling ido 7.1 for macos	1m 14s
Recompiling ido 5.3 for windows	2m 42s
Recompiling ido 7.1 for windows	2m 26s
Recompiling ido 5.3 for linux-arm	2m 1s
Recompiling ido 7.1 for linux-arm	2m 42s
	17m 18s

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