Revert "package/libcap: Fix build error with kernel headers < 3.6"

This reverts commit a759931c9b0cb4337dc30fd35d03ce123271c5a4.

package/cdrkit/Config.in

@@ -3,7 +3,6 @@ config BR2_PACKAGE_CDRKIT
 	select BR2_PACKAGE_BZIP2
 	select BR2_PACKAGE_LIBCAP
 	depends on BR2_LARGEFILE
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 # libcap
 	depends on BR2_USE_MMU # fork
 	bool "cdrkit"
 	help
@@ -13,6 +12,6 @@ config BR2_PACKAGE_CDRKIT
 
 	  http://www.cdrkit.org/
 
-comment "cdrkit needs a toolchain w/ largefile, headers >= 3.7"
+comment "cdrkit needs a toolchain w/ largefile"
 	depends on BR2_USE_MMU
-	depends on !BR2_LARGEFILE || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+	depends on !BR2_LARGEFILE

package/libcap/Config.in

@@ -1,6 +1,5 @@
 config BR2_PACKAGE_LIBCAP
 	bool "libcap"
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
 	help
 	  This library implements the user-space interfaces to the
 	  POSIX 1003.1e capabilities available in Linux kernels. These
@@ -23,6 +22,3 @@ config BR2_PACKAGE_LIBCAP_TOOLS
 	  CONFIG_EXT2_FS_XATTR and CONFIG_EXT2_FS_SECURITY for ext2).
 
 endif
-
-comment "libcap needs headers >= 3.7"
-	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7

package/lxc/Config.in

@@ -3,7 +3,6 @@ config BR2_PACKAGE_LXC
 	select BR2_PACKAGE_LIBCAP
 	depends on BR2_INET_IPV6
 	depends on BR2_TOOLCHAIN_HAS_THREADS
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 # libcap
 	depends on BR2_LARGEFILE
 	depends on BR2_USE_MMU # fork()
 	depends on !BR2_avr32 # no timerfd
@@ -15,9 +14,8 @@ config BR2_PACKAGE_LXC
 
 	  https://linuxcontainers.org/
 
-comment "lxc needs a toolchain w/ IPv6, threads, largefile, headers >= 3.7"
+comment "lxc needs a toolchain w/ IPv6, threads, largefile"
 	depends on BR2_USE_MMU
 	depends on !BR2_avr32 # no timerfd
 	depends on !BR2_nios2 # the toolchain doesn't support setns syscall
-	depends on !BR2_INET_IPV6 || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_LARGEFILE || \
-		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+	depends on !BR2_INET_IPV6 || !BR2_TOOLCHAIN_HAS_THREADS || !BR2_LARGEFILE

package/squid/Config.in

@@ -1,14 +1,12 @@
-comment "squid needs a toolchain w/ C++, IPv6, headers >= 3.7"
+comment "squid needs a toolchain w/ C++, IPv6"
 	depends on BR2_USE_MMU
 	depends on !BR2_avr32 # toolchain too old
-	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_INET_IPV6 || \
-		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_INET_IPV6
 
 config BR2_PACKAGE_SQUID
 	bool "squid"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_INET_IPV6
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 # libcap
 	# needs fork()
 	depends on BR2_USE_MMU
 	select BR2_PACKAGE_LIBCAP

package/systemd/Config.in

@@ -15,7 +15,6 @@ config BR2_PACKAGE_SYSTEMD
 	depends on BR2_INET_IPV6
 	depends on !BR2_PREFER_STATIC_LIB # kmod
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus
-	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 # libcap
 	depends on BR2_USE_MMU # dbus
 	select BR2_PACKAGE_HAS_UDEV
 	select BR2_PACKAGE_DBUS # runtime dependency only