Add option in configure for fast build #1572

Job	Run time
GCC build regression check (no tests)	1m 4s
macOS-M1, Clang (x3)	10m 29s
Alpine Linux, musl, 32-bit (assert, x1.5)	13m 35s
macOS-x86 Clang with BLAS (x2)	14m 54s
MinGW GCC (x0.5)	10m 43s
MSVC (x1)	9m 23s
Nemo.jl (temporary branch)	11m 55s
Ubuntu Clang with examples (x5)	12m 56s
Ubuntu GCC, Code Coverage (x10)	29m 28s
Ubuntu GCC with NTL (assert, x2)	8m 31s
	2h 2m 58s

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