Update .similar version file.

src/template/.similar

-alpha-dec-osf4=alpha
+alpha-dec-osf=alpha
 i386-pc-bsdi2.0=bsdi-2.0
 i386-pc-bsdi2.1=bsdi-2.1
 i386-pc-bsdi3.0=bsdi-3.0
-i586-pc-sco3.2v5=sco
+i586-pc-sco3.2v=sco
 i386-unknown-freebsd=freebsd
 i386-unknown-netbsd=netbsd
-mips-sgi-irix5=irix5
-sparc-sun-solaris2=sparc_solaris-gcc
+mips-sgi-irix=irix
+sparc-sun-solaris=sparc_solaris-gcc
 sparc-unknown-linux-gnu=linux-elf
 alpha-unknown-linux-gnu=linuxalpha