rename package: qemu-system-x86_64 --> qemu-system-x86-64

DEB package should not have "_" (underscore) in name.

x11-packages/qemu-system-x86-64/build.sh

@@ -5,9 +5,13 @@ TERMUX_PKG_MAINTAINER="Leonid Pliushch <leonid.pliushch@gmail.com>"
 # Do not update version unless you verified that it works properly.
 _PACKAGE_VERSION=4.2.1
 TERMUX_PKG_VERSION=1:${_PACKAGE_VERSION}
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://download.qemu.org/qemu-${_PACKAGE_VERSION}.tar.xz
 TERMUX_PKG_SHA256="7e331163b72e7bcf63bd35cb85cba87b48d12fab3f264b94c23f7d3991094207"
 TERMUX_PKG_DEPENDS="attr, glib, libbz2, libc++, libcap, libcurl, libgcrypt, libiconv, libjpeg-turbo, liblzo, libnfs, libpixman, libpng, libssh, libx11, ncurses, qemu-common, resolv-conf, sdl2, sdl2-image, zlib"
+TERMUX_PKG_CONFLICTS="qemu-system-x86_64"
+TERMUX_PKG_REPLACES="qemu-system-x86_64"
+TERMUX_PKG_PROVIDES="qemu-system-x86_64"
 TERMUX_PKG_BUILD_IN_SRC=true
 
 # Remove files already present in qemu-utils and qemu-common.