inspector: Invalid memory access when inpecting int and float options
inspector: Invalid memory access when inpecting int and float options

Inspector was accessing invalid memory area and printing int and float
values, because they are now a single number instead of an irange or
drange.
Also adding debug for the new option types irange-spec and drange-spec.

Error following:
=================================================================
==23290==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6030000310d4 at pc 0x00000040948a bp 0x7ffee0aa9b40 sp 0x7ffee0aa9b30
READ of size 4 at 0x6030000310d4 thread T0
    #0 0x409489 in inspector_did_open_node (/home/otavio/local/soletta/bin/sol-fbp-runner+0x409489)

0x6030000310d4 is located 0 bytes to the right of 20-byte region [0x6030000310c0,0x6030000310d4)
allocated by thread T0 here:
    #0 0x7f84e859aad9 in __interceptor_calloc /build/gcc-multilib/src/gcc-5.3.0/libsanitizer/asan/asan_malloc_linux.cc:54
    #1 0x7f84e7bcb9b0 in sol_flow_node_options_new (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1989b0)
    #2 0x7f84e7bd5fc9 in build_node (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1a2fc9)
    #3 0x7f84e7bd75a3 in build_flow (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1a45a3)
    #4 0x7f84e7bd8796 in sol_flow_parse_buffer (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1a5796)
    #5 0x40622e in runner_new_from_file (/home/otavio/local/soletta/bin/sol-fbp-runner+0x40622e)
    #6 0x403083 in startup (/home/otavio/local/soletta/bin/sol-fbp-runner+0x403083)
    #7 0x7f84e7b565c2 in sol_mainloop_common_idler_process (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1235c2)
    #8 0x7f84e7b5aa76 in sol_mainloop_impl_iter (/home/otavio/local/soletta/lib/libsoletta.so.0+0x127a76)
    #9 0x7f84e7b57840 in sol_mainloop_impl_run (/home/otavio/local/soletta/lib/libsoletta.so.0+0x124840)
    #10 0x7f84e7b5b3a7 in sol_run (/home/otavio/local/soletta/lib/libsoletta.so.0+0x1283a7)
    #11 0x403a7a in main (/home/otavio/local/soletta/bin/sol-fbp-runner+0x403a7a)
    #12 0x7f84e44ad60f in __libc_start_main (/usr/lib/libc.so.6+0x2060f)

Signed-off-by: Otavio Pontes <a04f37e3ccb281cf4119e4b2fa8286ed94121d92@intel.com>

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