boost: Bump to version 1.76.0

This commit updates boost to version 1.76.0

There are no new libraries in this version

More info about Boost 1.76.0 can be found at the usual place [1].

Note: This package update includes a fix merged to Boost.Fiber in [2]
which did not make into this version but it will be present in the next
one. For now, the patch is needed, but it will be removed in version
1.77.0

[1]: https://www.boost.org/users/history/version_1_76_0.html
[2]: https://github.com/boostorg/fiber/pull/276

Signed-off-by: Carlos Miguel Ferreira <carlosmf.pt@gmail.com>

libs/boost/Makefile

@@ -11,13 +11,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=boost
-PKG_VERSION:=1.75.0
-PKG_SOURCE_VERSION:=1_75_0
-PKG_RELEASE:=3
+PKG_VERSION:=1.76.0
+PKG_SOURCE_VERSION:=1_76_0
+PKG_RELEASE:=$(AUTORELEASE)
 
 PKG_SOURCE:=$(PKG_NAME)_$(PKG_SOURCE_VERSION).tar.bz2
 PKG_SOURCE_URL:=@SF/$(PKG_NAME)/$(PKG_NAME)/$(PKG_VERSION) https://dl.bintray.com/boostorg/release/$(PKG_VERSION)/source/
-PKG_HASH:=953db31e016db7bb207f11432bef7df100516eeb746843fa0486a222e3fd49cb
+PKG_HASH:=f0397ba6e982c4450f27bf32a2a83292aba035b827a5623a14636ea583318c41
 
 PKG_MAINTAINER:=Carlos M. Ferreira <carlosmf.pt@gmail.com>
 PKG_LICENSE:=BSL-1.0
@@ -42,7 +42,7 @@ define Package/boost/Default
 endef
 
 define Package/boost/description
-This package provides the Boost v1.75.0 libraries.
+This package provides the Boost v1.76.0 libraries.
 Boost is a set of free, peer-reviewed, portable C++ source libraries.
 
 This package provides the following run-time libraries:
@@ -77,7 +77,7 @@ This package provides the following run-time libraries:
  - wave
 
 There are many more header-only libraries supported by Boost.
-See more at http://www.boost.org/doc/libs/1_75_0/
+See more at http://www.boost.org/doc/libs/1_76_0/
 endef
 
 PKG_BUILD_DEPENDS:=boost/host