#3 [patch] fix gcc-10 build )-fno-common

[Sergei Trofimovich]

gcc-10 changed the default from -fcommon to fno-common:
https://gcc.gnu.org/PR85678

As a result build fails as:

ld: /build/cct3qrT9.o:(.bss+0x0): multiple definition of `handle'; /build/cc4dJNO8.o:(.bss+0x0): first defined here
ld: /build/cct3qrT9.o:(.bss+0x8): multiple definition of `cdprs'; /build/cc4dJNO8.o:(.bss+0x8): first defined here
ld: /build/cct3qrT9.o:(.bss+0xc): multiple definition of `timeout'; /build/cc4dJNO8.o:(.bss+0xc): first defined here
ld: /build/ccbaP0xb.o:(.bss+0x0): multiple definition of `handle'; /build/cc4dJNO8.o:(.bss+0x0): first defined here
ld: /build/ccbaP0xb.o:(.bss+0x8): multiple definition of `cdprs'; /build/cc4dJNO8.o:(.bss+0x8): first defined here
ld: /build/ccbaP0xb.o:(.bss+0xc): multiple definition of `timeout'; /build/cc4dJNO8.o:(.bss+0xc): first defined herOAe

The attached change moves variable definitions to .c files.