add 7360/90 EWE Firmware (closes #2039)

git-svn-id: file:///var/svn/freetz/trunk@10516 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * rename FREETZ_UCLIBC_0_9_XX_BASED_BOX to FREETZ_AVM_UCLIBC_0_9_XX


git-svn-id: file:///var/svn/freetz/trunk@10517 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * rename FREETZ_GCC_X_Y_COMPILED_KERNEL to FREETZ_AVM_GCC_X_Y


git-svn-id: file:///var/svn/freetz/trunk@10518 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * rename FREETZ_TARGET_UCLIBC_VERSION_0_9_XX to FREETZ_TARGET_UCLIBC_0_9_XX (counterpart to FREETZ_AVM_UCLIBC_0_9_XX)


git-svn-id: file:///var/svn/freetz/trunk@10519 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * rename FREETZ_KERNEL_COMPILER_GCC_X_Y to FREETZ_KERNEL_GCC_X_Y


git-svn-id: file:///var/svn/freetz/trunk@10520 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * rename FREETZ_TARGET_COMPILER_GCC_X_Y to FREETZ_TARGET_GCC_X_Y


git-svn-id: file:///var/svn/freetz/trunk@10521 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * remove unused make variables


git-svn-id: file:///var/svn/freetz/trunk@10522 149334a1-2f27-0410-a3b9-fc62619ac1e6
 * move original firmware related menuconfig symbols to Config.in.has_avm
 * refs #1939


git-svn-id: file:///var/svn/freetz/trunk@10523 149334a1-2f27-0410-a3b9-fc62619ac1e6