[PATCH 13/22] tools include: Adopt ERR_CAST() from the kernel err.h header

From: Arnaldo Carvalho de Melo Add ERR_CAST(), so that tools can use it, just like the kernel. This addresses coccinelle checks that are being performed to tools/ in addition to kernel sources, so lets add this to cover that and to get tools code closer to kernel coding standards. This

[PATCH 13/22] tools include: Adopt ERR_CAST() from the kernel err.h header

From: Arnaldo Carvalho de Melo Add ERR_CAST(), so that tools can use it, just like the kernel. This addresses coccinelle checks that are being performed to tools/ in addition to kernel sources, so lets add this to cover that and to get tools code closer to kernel coding standards. This